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AF154: Major royal jelly protein 
Biochemical properties
 The major royal jelly proteins comprise 12.5% of the mass and 82-90% of the protein content of honeybee royal jelly [1]. Royal jelly is a substance secreted by the cephalic glands of nurse bees and it is used to trigger development of a queen bee from a bee larva. The biological function of the MRJPs is unknown, but they are believed to play a major role in nutrition due to their high content of essential amino acids. In addition, the protein is cleaved into peptides, the jelleins, with antibacterial and antifungal activities [2]. 
 
Allergens from this family
 Two royal jelly proteins, MRJP1 and MRJP2, were identified as major allergens involved in food allergic reactions to royal jelly [3]. Two members of this family, MRJP8 and MRJP9, were found in bee venom and characterised as minor allergen, Api m 11 [4]. 
 
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References
 - Schmitzova J, Klaudiny J, Albert S, Schroder W, Schreckengost W, Hanes J, Judova J, Simuth J:
 A family of major royal jelly proteins of the honeybee Apis mellifera L.
 Cell Mol Life Sci 1998, 54, 1020-30. [PubMed]
- Fontana R, Mendes MA, de Souza BM, Konno K, Cesar LM, Malaspina O, Palma MS:
 Jelleines: a family of antimicrobial peptides from the Royal Jelly of honeybees (Apis mellifera).
 Peptides 2004, 25, 919-28. [PubMed] [Full Text]
- Rosmilah M, Shahnaz M, Patel G, Lock J, Rahman D, Masita A, Noormalin A:
 Characterization of major allergens of royal jelly Apis mellifera.
 Trop Biomed 2008, 25, 243-51. [PubMed]
- Blank S, Bantleon FI, McIntyre M, Ollert M, Spillner E:
 The major royal jelly proteins 8 and 9 (Api m 11) are glycosylated components of Apis mellifera venom with allergenic potential beyond carbohydrate-based reactivity.
 Clin Exp Allergy 2012, 42, 976-85. [PubMed] [Full Text]
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Links to Pfam
Family-defining Pfam domains (at least one of these domains is present in each family member):
 
  
   | Pfam domain | Pfam clan | 
 
 
  
   | PF03022 | Major royal jelly protein | CL0186 | Beta propeller clan | 
 
Links to Wikipedia
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